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Circular RNA Expression and Interaction Patterns Are Perturbed in Amyotrophic Lateral Sclerosis.

Chiara Aquilina-Reid1, Samuel Brennan1, Ashton Curry-Hyde2

  • 1GenieUs Genomics Pty Ltd., Sydney, NSW 2010, Australia.

International Journal of Molecular Sciences
|December 11, 2022
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Summary
This summary is machine-generated.

Circular RNAs (circRNAs) show altered expression in amyotrophic lateral sclerosis (ALS). These circRNAs may act as biomarkers and therapeutic targets by influencing microRNA activity and gene expression in ALS patients.

Keywords:
amyotrophic lateral sclerosiscircular RNAsmicroRNAsspinal cordtranscriptome sequencing

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Area of Science:

  • Molecular Biology
  • Genomics
  • Neuroscience

Background:

  • Circular RNAs (circRNAs) are abundant, conserved long noncoding RNAs with differential expression in diseases like amyotrophic lateral sclerosis (ALS).
  • A key function of circRNAs is acting as microRNA (miRNA) sponges, sequestering miRNAs that would otherwise target messenger RNAs (mRNAs) and affect gene expression.

Purpose of the Study:

  • To investigate circular transcriptome perturbations and circRNA-miRNA-mRNA interactions in ALS patient spinal cord samples.
  • To identify circRNAs with biomarker potential for ALS.

Main Methods:

  • Analysis of ALS patient samples from three spinal cord regions.
  • Application of stringent statistical parameters to identify differentially expressed circRNAs and linear RNAs.
  • Investigation of circRNA-miRNA-mRNA interactions.

Main Results:

  • Identification of 92 differentially expressed circRNAs across spinal cord tissues.
  • Detection of differential expression in 37 linear RNAs, potentially mediated by circRNA-miRNA interactions.
  • Evidence supporting circRNAs as regulators of gene expression in ALS.

Conclusions:

  • Specific circRNAs demonstrate potential as novel biomarkers for ALS.
  • CircRNAs identified in this study represent potential therapeutic candidates for ALS treatment.
  • Understanding circRNA-mediated gene regulation offers insights into ALS pathogenesis.